code: def dump_binary(obj, filename):
      """
      Pickles and saves an object to file.
      :param obj: the object to save
      :param filename: a string or file-like object
      """
      joblib.dump(obj, filename)
  
imports: import ast
  import sys
  import joblib
  import networkx
  import numpy
  import pandas
  import scipy.sparse
  from spektral.data.graph import Graph
label_desc: Use image node_id 2 for calling a global function with example usage: dump_binary(obj, filename) without return types